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Finding the Fourth Proportional to 114,004.80, 157,431.60 and 76,388.40

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Solution

The fourth proportional to 114,004.80, 157,431.60 and 76,388.40 is: 105,486.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,004.80 : 157,431.60 = 76,388.40 : x
  2. Step 2: Convert to fraction form
    114,004.80/157,431.60 = 76,388.40/x
  3. Step 3: Cross multiply
    114,004.80x = 157,431.60 × 76,388.40
  4. Step 4: Simplify right side
    114,004.80x = 12,025,948,033.44
  5. Step 5: Solve for x
    x = 12,025,948,033.44/114,004.80
  6. Step 6: Final answer
    x = 105,486.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.